— Aaron Levie, CEO of Box who’s all of 28 years old and Inc. Magazine’s entrepreneur of the year. The Los Altos company, which has about 20 million users who use it to share files in the cloud, is said to be valued at $1.2 billion and planning to go public next year. But Levie seems to be uneasy, according to Inc.’s profile, as he deals with competitors in the industry.

One of Levie’s answers to a question — is it possible for a company to last forever — posed by a new employee, according to Inc., “I mean, it’s possible we won’t even have capitalism in 200 years. Maybe the Internet even won’t exist. The idea is that you’re always talking about disrupting, always talking about what’s next.”

As Peter Delevett wrote in September: “It’s no wonder Levie now sports premature gray to match his preternatural intelligence.”

Scott Weiss, a partner at Andreessen Horowitz, which is an investor in Box, told Inc. that Levie is “unmistakable. You talk with him for five minutes, and he says something funny and something smart and something insightful. He’s a larger-than-life character.”

Twitter is a perfect platform for someone with the wit and smarts of Levie. Here’s a sampling: